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Elanso [62]
3 years ago
13

Which two practices are examples of how people use science?

Chemistry
2 answers:
BigorU [14]3 years ago
8 0

Answer:

B.

Explanation:

Anika [276]3 years ago
4 0

B. Developing theories using many lines of evidence

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A chemistry instructor provides each student with 8 test tubes at the beginning of the year. If there are 28 students per class,
klemol [59]
Three classes: 28×3=84 students
8 test tubes per student: 84× 8= 672
hope this helps!
7 0
3 years ago
What is the volume of 88.2 g of silver metal (density = 10.50 g/cm^3)
babymother [125]

Answer:

The answer is

<h2>8.4 mL</h2>

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

volume =  \frac{mass}{density}

From the question

mass = 88.2 g

density = 10.5 g/cm³

The volume is

volume =  \frac{88.2}{10.5}

We have the final answer as

<h3>8.4 mL</h3>

Hope this helps you

8 0
3 years ago
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Why are hydrogen bonds so essential to the structure of dna?
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Hydrogen bonds<span> hold the paired nitrogenous bases together. Because </span>hydrogen bonds<span> are weak </span>bonds<span>, the two strands of </span>DNA<span> are easily separated a characteristic that is important to </span>DNA's<span> function.</span>Hydrogen bonds<span> form between adenine and thymine and between cytosine and guanine.</span>
4 0
3 years ago
Given the following equation, what is the actual yield of potassium chloride if the percent yield is 94% and you have 750 g of o
ivanzaharov [21]

Answer:

ly/3gVQKw3

Explanation:

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4 0
3 years ago
What is the difference between an atom and an element? a An atom cannot be cut into smaller, but an element is a group of atoms
miss Akunina [59]

Answer:

c.

Explanation:

One of the main differences between an atom and an element is that an atom can be combined but an element cannot be combined. There are many combinations of atoms that make up different gases, liquids, and solids each with a unique makup. For example, water is made up of two hydrogen atoms and one oxygen atom (H20). Elements are made up of only the same type of atom. For example, the element Hydrogen can only contain hydrogen atoms, while the element Carbon can only contain carbon atoms.

5 0
3 years ago
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